积小流，成江海

摘要： 思路：要想挂断电话，必然会用到电话服务：getSystemService(TELEPHONY_SERVICE);但查看源码时，发现[java]view plaincopy@OverridepublicObjectgetSystemService(Stringname){returnmBase.getSystemService(name);　}继续查找：[java]view plaincopyContextmBase;publicContextWrapper(Contextbase){mBase=base;}接着查看Context的源码publicabstractclassContext{... 阅读全文